Vending machine



FIG. 1 is a front perspective view of a vending machine showing my new design;

FIG. 2 is a front elevational view;

FIG. 3 is a right elevational view;

FIG. 4 is a bottom plan view;

FIG. 5 is a top plan view;

FIG. 6 is a left elevational view; and

FIG. 7 is a rear elevational view. 

The ornamental design for a vending machine, as shown and described. 